linux-kernel - Re: [GIT PULL] Remove ARM local timer API

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Message-ID: <CAGsJ_4zQEAHQM1C5_PDhMtUsrM1za6Fg-XS3jBNYTnm9H30qaQ@mail.gmail.com>
Date:	Wed, 26 Jun 2013 09:06:29 +0800
From:	Barry Song <21cnbao@...il.com>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	arm@...nel.org, Arnd Bergmann <arnd@...db.de>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Barry Song <baohua.song@....com>,
	Olof Johansson <olof@...om.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	David Brown <davidb@...eaurora.org>,
	Russell King <rmk@....linux.org.uk>
Subject: Re: [GIT PULL] Remove ARM local timer API

2013/6/26 Stephen Boyd <sboyd@...eaurora.org>:
> Olof/Arnd,
>
> These patches remove the ARM local timer API. The ARM architected
> timers have already moved away from this API so this series
> migrates the rest of the users allowing us to remove the API
> entirely. Thomas has been kind enough to take the first two
> patches into timers/core in the tip tree (thanks Thomas!) so I've
> merged that into v3.10-rc1 and then applied the rest of the
> patches on top. Let me know if this is acceptable.
>
> These patches have been through multiple rounds and tested by
> multiple people since before the 3.10 merge window closed. Only
> Barry's ack is missing (Cced).

sorry for delayed reply. pls don't wait for my ack. as we are dropping
the marco SoC project this driver supports and moving to a new SoC.
that is why i didn't verify and ack this.
whether this driver is still usable will depend on whether the timer
IP will be re-used in the new chip. so maybe i will delete this driver
once timer IP is decided in the new SoC, or i will repeat to maintain
and verify it if the new SoC uses the same IP.

>
> Since I don't have a tree on kernel.org, David Brown has been
> kind enough to push my tag out to his repo. Please pull.
>
> The following changes since commit 42cba6e27c4cddc4df701c597dbfa666e1c013c8:
>
>   Merge branch 'timers/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into remove-local-timers (2013-06-24 17:45:02 -0700)
>
> are available in the git repository at:
>
>
>   git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm.git tags/remove-local-timers
>
> for you to fetch changes up to 060fd3043e5e3488504b9e70182e188dd9113aea:
>
>   ARM: smp: Remove local timer API (2013-06-24 17:47:34 -0700)
>
> ----------------------------------------------------------------
> Now that we have a generic arch hook for broadcast we can remove the local
> timer API entirely. Doing so will reduce code in ARM core, reduce the
> architecture dependencies of our timer drivers, and simplify the code because
> we no longer go through an architecture layer that is essentially a hotplug
> notifier.
>
> ----------------------------------------------------------------
> Stephen Boyd (9):
>       ARM: smp: Remove duplicate dummy timer implementation
>       ARM: smp_twd: Divorce smp_twd from local timer API
>       ARM: OMAP2+: Divorce from local timer API
>       ARM: EXYNOS4: Divorce mct from local timer API
>       ARM: PRIMA2: Divorce timer-marco from local timer API
>       ARM: msm: Divorce msm_timer from local timer API
>       clocksource: time-armada-370-xp: Fix sparse warning
>       clocksource: time-armada-370-xp: Divorce from local timer API
>       ARM: smp: Remove local timer API
>
>  arch/arm/Kconfig                         |  12 +--
>  arch/arm/include/asm/localtimer.h        |  34 ---------
>  arch/arm/kernel/smp.c                    |  87 ---------------------
>  arch/arm/kernel/smp_twd.c                |  64 ++++++++++------
>  arch/arm/mach-highbank/Kconfig           |   2 +-
>  arch/arm/mach-imx/Kconfig                |   2 +-
>  arch/arm/mach-msm/timer.c                | 126 +++++++++++++++++--------------
>  arch/arm/mach-omap2/Kconfig              |   3 +-
>  arch/arm/mach-omap2/timer.c              |   7 --
>  arch/arm/mach-realview/Kconfig           |   8 +-
>  arch/arm/mach-spear/Kconfig              |   2 +-
>  arch/arm/mach-tegra/Kconfig              |   2 +-
>  arch/arm/mach-ux500/Kconfig              |   2 +-
>  arch/arm/mach-vexpress/Kconfig           |   2 +-
>  arch/arm/mach-zynq/Kconfig               |   2 +-
>  drivers/clocksource/exynos_mct.c         |  60 ++++++++++-----
>  drivers/clocksource/time-armada-370-xp.c |  92 +++++++++++-----------
>  drivers/clocksource/timer-marco.c        | 100 +++++++++++++-----------
>  include/linux/time-armada-370-xp.h       |   4 +-
>  19 files changed, 267 insertions(+), 344 deletions(-)
>  delete mode 100644 arch/arm/include/asm/localtimer.h
>
> --
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
> hosted by The Linux Foundation

-barry
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